Stuffing-box.



y,S'IALTES PATENT OFFICE.

GEoEGE fw., :acorta-0E 'ro'r'rENviLLE NEW YORK.

STUFFINGsBOX.

To all whom it may concern.'

Be it known that I, GEoaGs W. Moons, a citizen of the United States, residing at Tottenville, in the county of Richmond and State of New York, have invented certain new and useful Improvements inl Stiiing- Boxes, of which the following is a specification.

This invention relates to stuffing boxes and is desi ned particularly to construct a device of tiis character, for use in connection with the propeller shaft of marine vessels.

In the stuiling box now in use, the rotation of the propeller shaft has due to its position to the bearing surfaces tiereof, worn a depression upon the lower side of the bearing, thus causin the rear terminal of the sha t to drop slig itly and throw the entire shaft out of alinement.

It is the object of the present invention to eliminate this wear and to provide a stuin or box which will retain the propeller sha t in direct alinement at all times and prevent any warping or bending thereof.

Among tie other obJects ofv the present invention is to provide a bearing or stuing box which will be thoroughly lubricated at all times, in suchla manner that leakage may be positively prevented, and all strains, etc., mav be removed.

With the above and other objects in view, my invention consists in the construction combination, and arrangements of arts, all as hereinafter more ful y described), wherein Figure 1 is a top lan elevation of a stuffing box constructe in accordance with the present invention. Fi 2 is a central longitudinal section taken a ong line 2--2 of Fi l. Fig. 3 is an elevation of one of the ba l races located within the stuing box.

In carrying out the present invention, the propeller shaft i s incased in a tubular bearing sleeve provided at its outer terminal with an exteriorly threaded tubular extension upon which is threaded a suitable couling. A circular flange is located upon the interior of the sleeve adjacent to the inner terminal of the threaded extension and provides a bearing surface for the ball races which are mounted within said threaded extension. These ball races are retained in their o erativc osition by a suitable washer or gas ret threa ed upon the interior of the coupling and operating against the terminal Speomcation of Letters Patent.

Application led Hai-oli 28, 1912. Serial No. 688,914.

of said extension.

Patented Mar. 18,1913.

l Packing is mounted between said washer and the outer face of said coupling. The inner terminal of the bearing sleeve heretofore referred to is in thread- 3i;

ed engagement with the exteriorly threaded nipple which projects through the hull of the boat. A washer is threaded into the rear terminal of said bearin sleeve and provides a means whereby pac ting may be rca5 tained adjacent to the terminal of said nipple within said sleeve.

Reference bein had more particularly to the drawing, 10 indicates a suitable propeller shaft provided with any type of pro 7o peller l1 at its outer terminal. The bearing sleeve 12 incases the shaft 10 adjacent to the ropeller 11 and upon the exterior of the iioat to which the device is attached,`

said sleeve being interiorly threaded at the 75 inner end thereof and provided with an exteriorly threaded extension 13 at the Outer terminal thereof. An inwardly cxtending circular flange 14 is formed upon the interiorof said sleeve 12, adjacent to the so inner` terminal of the exteriorly threaded extension 13, said flange constituting a washer in its function, the orifice thereof, bein of greater diameter than the diameter of t e shaft aforesaid, for the pur )ose of 8.5

allowing the free circulation of a lu ricant. Suitableball races l5 are mounted upon the interior of the exteriorly threaded extension 13 and bear against the flange 11,

said ball races having suitable ball bearings so 16 mounted therein. The ball races 15 arc U shaped in cross section to provide a cliannel for the operation of the ball bearings lo' but have one side of said U shaped channel cut away to form an opening 17, by means ss of which the balls may be removed when so desired.

A suitable coupling 18 is mounted upon the threaded extension 13 due to the interior threads formed upon said coupling. couplin 18 has a washer 19 threaded therein whic abuts against the outer terminal ot' the exteriorly threaded extension 13 and prevents any displacement of the ball races l5, and suitable packing material 2O is placed im,

between the outer terminal of the coupling 18 and the washer 19 heretofore referred to. In order to jam the coupling 18 and to irevent any movement thereof, a suitable lock nut 21 is mounted for rotation upon the ii` threaded extension 13, and when the entire device is in its operative position is adapted This loo therebv forming a The inner terminal ofthesleeve 12tis--in-l teriorly threaded as at 22 to receive the inner terminal of -angexterorly threaded nipple 23;:

This nipple is threadedpartially into the interior of the sleeve 12 and operates a ainstl the packing rinf1r 24. 4The innerside o said.

packing ring bears Vagainst a washer 25 threaded upon the interior of the sleev'e'12, the opening in 'said washer being Aof a slight y greater diameterthan the sleeve 10. 'l`he washer 25 is s aced from the iian'ge 14 ubricant 'recess'.26,v which is fed by the p1pe27 leading to the interior of the boat.

A. suitable bearing plate 28 is mounted upon the interior terminal of the nipple 23 and copei-ates with a lock nut 29 to secure the entire device in its operative position.

It will be clearly understood from the foregoing that the pipe 27 keeps the lubricant chamber 26 constantly fil ed with lubricant, while the rotation of the shaft causes said lubricant to be conveyed through the ball bearings into the packing causing the same to be entirely saturated with the lubricant while a similar process conveys the lubricant to the packin ring 24.

H avne thus fully descri ed my invention, what I claim is new and desire to secure by U. S. Letters Patent, is

l. In a stuing box, the combination with a shaft, of a sleeve surrounding said shaft and formed intermediate its ends with an inwardl7 projecting flange a ball raceway surrounding said shaft and ositioned within the sleeve, a plurality of ring balls retained within said race-way by the shaft,

and'means surrounding said shaft and se- `v cureditt'i 1one end of the-sleeve, whereby the ballrace-way is retained in position.

-.'`2.".Thecombination with a shaft, of a stuflin box therefor, comprising a sleeve `forme j-intermediate its ends with an inwardl projecting flange,

apertured bearing disks oosely surrounding said shaft and titting within the sleeve, said bearing disks being formed withrace-ways, bearing balls positioned within said race-way and retained therein by saidshaft, a coupling member secured to one end of said sleeve to retain the bearing disks therein, and means for supporting'a stuffing box.

3. In a stuing box for propeller shafts, the combination of a sleeve externally threaded adjacent one end and internall)y threaded adjacent the other cnd, an internal Harige formed upon the sleeve intermediate its ends, apertured bearing disks adapted to surround a shaft, said disks being annularly grooved to form race-ways, ball bearings adapted to be retained in said race-ways by propeller shafts an apertured cap member threaded upon the exterior of said sleeve to hold the race-ways therein, a washer threaded upon the interior of the sleeve and spaced from the flange thereof to forni a lubricant chamber, a nipple .threaded into the inner end of the sleeve, a packing interposed between said nip le and washer, and meansl whereby the lu ricant may be conducted to the lubricant chamber.

In testimon whereof I aflix my signature in presence o two witnesses.

GEORGE W. MOORE. Witnesses:

G. W. DuBois, THOMAS N. Hawkins.

copies ot this patent may be obtained tor tvs cents ascii, by sddressing the Commissioner eLPateata. washington, D. 0. 

